Top-lift-burnishing machine



F. J. TISDELL. TOP LIFT BURNISHING MACHINE.

APPLICATION FILED MAY 31', I919.

Patented Aug. 17, 1920.

2 SHEETS-SHEET l.

F. J. TISDELL. TOP LIFT BURNISHING MACHINE. APPLICATION FILED MAY 31, 1919.

Patented Aug. 17, 1920.

2 SHEETSSHEET 2.

' operator.

UNITED STATES:

PATENT OFFICE.-

FRANK J. TISDELL, OF LYNN, MASSACHUSETTS, ASSIG-NOR OF ONE-FOURTH TO CHARLES B. DAVIS, OF LYNN, MASSACHUSETTS, AND ONE- HALF TO GREG- ORY &; READ 00., OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSA- TOP- LIFT-BURNISHING MACHINE.

Specification of Letters Patent.

Patented Aug. 17, 1920.

To all whom it may concern:

Be it known that I, FRANK J. TIsDELL, a subject of the King of Great Britain, and a resident of Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Top-Lift-Burnishing Machines, of which the following is a specification.

This invention relates to a machine for ironing, burnishing, or otherwise finishing the edges of the leather top-lifts which are usually attached to wood heels, this operation usually being performed before the heel is attached to the shoe.

Prior to my invention it has been custom: ary to perform this work with a rotary burnishing iron, the heel being held in the hands of the operator and pressed thereagainst.

This method has many well known disad vantages. For example, it requires a considerable degree of skill on the part of the It is slow and severely taxes the strength of the operator after a time.

The object of m invention is to provide a machine for per orming this work, which will enable the same to be easily, rapidly and Y satisfactorily performed by comparatively unskilled labor.

I accomplish this object by the means Ishown in the accompanying drawing in which v Figure 1 is a side elevation of a machine, embodying my invention.

Figs. 2 to 4 are detail views of the heel .base engaging clamp member, which I employ.

Figs. 5 to 7 are sectional views taken at line a, aof Fig. 1, showing the parts in different positions.

Fig. 8 is a plan viewof the work supporting means when turned to a horizontal position.

' In the drawings, a preferred embodiment of my invention is shown, which comprises a base 1, having vertically adjustable bearings- 2 mounted therein, in which a horizontal shaft 3 is journaled, said shaft having tight and loose pulleys 4; and 5 thereon. A rotary burnishing iron or tool 6 is mounted on one endof said shaft, said tool being of a form. commonly employed for this purpose, having an oblique edge-burnishing face 6 and a tread-face-engaging flange 6".

According to my invention, 1 provide on the base 1 a pair of vertically disposed gurdeways, 7 and 8, (see Figs. 1 and 8) in whlch a yoke, or U-shaped frame 9 is mounted to slide, and means are provided for lifting said yoke, comprising a vertically disposed rod 10, to which a foot treadle 11 is attached, said rod passing directly through the base of the machine.

A U-shaped clamp frame 12, having arm portions 12 and 12 is mounted between the arms of saidyoke 9 to swing about an axis parallel to, and in the same vertical plane as, the axis of the shaft 3, by means of a stud 13 which projects from the arm 12 into arm 9*, and a rod 14, which passes through the arms 9 and 12 and is slidable therein, said stud and rod being arranged in axial alinement. A U-shaped arm 16 is formed integrally with clamp frame 12 and extends from arm 12", in opposite relation thereto, longitudinally of rod 11 and then transversely, so that its end portion extends into the axial line of said rod, said frame 12 and arm 16 forming, in effect, a double crank.

A coiled spring 18 is arranged on the stud 13, between said frame arms, said stud being slidable in the arm 9, and said spring being normally adapted to hold the clamp frame i pproximately .in the position shown in coiled spring 20 is provided on the rod 14 between the arm 9 and a collar 21, and normally acts to push said rod to the right. A clamping screw 22 is threaded in the end portion of the arm 16 and is arranged in axial alinement with the rod 14, andin position to engage the end thereof to force the same to the left, against the action of spring 20.

A heel base clamp member is provided, which consists of a plate 24. having a con vex face adapted to fit in the conraved face in the-base of an ordinary wood heel. said plate preferably having brads 25 in its face, to assist 1n holding the heel in position and a notch 24 in its lower end, to receive the adby a central bolt 27, said bolt passing transversely therethrough and being supported in a socket, formed therefor in the adjacent end of rod 14, said bar 26 being held in a horizontal position against the rear side of the plate 24 by two pairs of projecting pins 28 mounted in the plate, as shown in Figs. 1 to 4.

A pull spring 30 is connected to the rear side of plate 24 and to the frame arm 12 and acts to draw the plate against an adj ustable stop, such as the screw 31, on the frame, when the clamp is opened to release a heel.

b A short projection 32, having a vertically disposed fiat face at its end, is formed on the inner side of the clamp arm 12, said face and the work-engaging side of the toolfiange 6 being normally held in the same vertical plane, and said face being arranged to form the top-lift engaging member of the clamp.

The manner in which the device is operated may be described as follows A wood heel :v, with the leather top-lift 3 attached, is placed in the cla'mp with the top-lift against the projection 32, and the hand screw 22 is turned so as to force the rod 14 inward, to press the plate 24 against the heel base, so that the heel will be clamped securely in the position shown in Fig. 1. The tool 6 is constantly rotated at a high A rate of speed, its position with relation to the heel clamp being adjusted in the direction of its axis, if necessary, by changing the position of the pulleys 4, 5 on the shaft 3.

The clamp frame 12 and arm 16 at, or near the points indicated by the characters H and H, respectively, are adapted to provide hand holds, and, in practice, the operator grasps the hand-hold H with his left hand, and the hand-hold H with his right, a and, at the same time, depresses the treadle the iron to operate on the lift edge throughout its entire length, except the breast edge as indicated in Figs. 5 to 7 As the edge 0 the lift is not concentric with the axis of the clamp, the latter is raised and lowered as it is rotated by varying the pressure on the 'treadle, the force with which the lift is held against the tool being entirely controlled thereby.

In moving the lift into engagement with the iron, the clamp is not only moved I axially, so that the flange 6 of the iron will bear against the lift face, but, as this face is likely to be more or less out of true, 2'. 6., not exactly fiat, more or less axial motion of the clamp is usually necessary,.while it is being rotated; Also, to form a sharp, and well finished edge on the top lift, the lift must be pressed with some force against the flange 6*, while pressed against the surface 6 In practice, therefore, the heel is moved in three different ways at the same' time, said movements being vertical, horizontal and rotational.

When the operation is finished, the frame 9 is permitted to rest on the base, and, to unclamp the heel, the screw 22 is turned back, permitting thespring 20 to move the rod 14 in the same direction, and the spring 30 to draw back the plate 24, with the rod 14, until the bottom portion engages the stop screw 31. When the plate is in this position, another heel may be readily placed in position. a

The operation is thus rapidly performed.

1. A machine for finishing the edge of'a top-lift of a heel comprising a rotary tool having an edge-finishing portion and a tread face engaging flange, a yoke having manually controlled means to move it transversely of the axis of the tool, a heel clamp frame, having heel-clamping members, said frame being pivotally mounted at its ends in the arms of said yoke and arranged to be manually moved about an axis parallel to v the axis of the tool, and longitudinally thereof, to permit the thread face of the toplift to be held against said flange while its 2. A machine for operating on the edges of the top lifts of heels comprising a tool mounted to rotate about a horizontal axis, a vertically movable yoke, a heel-clamp frame having relatively movable heel clamping members and having pivots at its ends arranged to support it in the arms of said yoke in position to permit it to be manually swung about an axis parallel to the axis of said tool and to be slid longitudinally of said axis, and manually controlled means for raisin and lowering said yoke to hold the top-1i t against the tool while the frame. is;

manually moved on its pivots.

3. In combination with'a tool mounted to rotate about a horizontal axis, a vertically movable frame disposed beneath said tool, a U-shaped heel-clamp mounted in said frame and freely movable about an axis parallel to the axis of said tool, sa'id clamp-having a heel-top-engaging face fixed on the inner side of one of its arms and a heel base engaging plate between its arms, said face and plate being arranged to hold a heel adjacent the axis of said clamp, means movable. in line with said axis to adjust said plate toward and from said face, and means under direct control of the operator for yieldingly sustaining said frame to hold a heel supported by said clamp in position to be operated on by said tool.

4. In combination with a tool mounted to rotate about a horizontal axis, a vertically movable frame disposed beneath said tool, a heel clamp comprising two arms and a rigid intermediate connection, one of said arms being pivotally engaged with said frame at its outer side, and having ,a heel-top engaging face at its inner side, and the opposite arm having a longitudinally adjustable rod passing therethrough in axial alinement with said pivot, and providing a pivotal support for said clamp, a heel-base engaging plate disposed between said arms and arranged to be forced by said rod toward said face, means for forcing said rod longitudinally to clamp the heel, and means for yieldingly supporting said frame in position to hold a heel carried by said clamp in position to be operated on by said tool.

5. In combination with a tool mounted to rotate about a horizontal axis, a vertically movable frame disposed beneath said tool, a heel holder comprising a pair of double crank arms pivotally mounted in said frame to swing about an axis parallel to the axis of said tool and oppositely arranged with relation to the'axis about which they swing to provide oppositely disposed -'hand holds for controlling the rotative movements of said holder, heel clamping members mounted between one pair of arms, one of said members being stationzrily disposed at the inner side of one of said arms, and the other of said members having adjusting means comprising a rod adjustable in line with the axis of said rod and a screw threaded in the end arm of the other pair of arms to force said rod toward the stationary clamp member, and manually controlled means for holding said frame in position to engage a heel carried by said clamp with said tool,

6. In combination with a tool mounted to rotate about a horizontal axis, a frame guided to' move vertically beneath said tool, a U-shaped heel-clamp having a stud at oneend and a clamp member adjusting rod at the opposite end, said rod and stud being arranged in axial alinement and supported in said frame providing a'pivotal support port a heel carried by said clamp in position to be operated on by said tool in the different positions of axial and rotary adjustment thereof.

8. In combination with a tool mounted to rotate about a horizontal axis, a yoke mounted to move vertically beneath said tool, a U-shaped frame mounted between the arms of said yoke to rotate about an axis parallel to the axis of said tool and having a fixed and an adjustable heel-clamping memberrespectively carried by the opposite arms of said frame, a U-shaped arm rigidly connected to, and extending from said frame, and having means at its extreme end for con trolling the position of said adjustable member, said U-shaped arm and frame providing hand holds for the manual control thereof, and manually controlled means for sustaining said yoke in operative relation with said tool.

9. In combination with a tool mounted to rotate about a horizontal axis, a yoke mounted to move vertically beneath said tool, a U-shaped frame disposed between the arms of said yoke, a pivot stud extending between two of the adjacent arms of said yoke and frame and a rod extending through and longitudinally movable in the other two arms thereof, in axial alinement with said pivot stud and providing therewith means for supporting said frame in said yoke in position to be moved rotatably about an axis parallel to the axis of the tool, a heel- FRANK J. TISDELL. 

